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Wolf CMS EUVDEUVD-2026-51293

| CVE-2026-67207 HIGH
Incorrect Comparison (CWE-697)
2026-07-30 VulnCheck GHSA-xv6g-v6rg-vw4p
PHP Authentication Bypass Wolfcms
8.7
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
8.8 HIGH

Network-reachable controller exploitable by any authenticated non-admin (PR:L, AC:L, no UI); backup create/download/restore yields full confidentiality, integrity, and availability impact within the same app scope.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Jul 30, 2026 - 20:51 vuln.today
CVE Published
Jul 30, 2026 - 19:30 cve.org
HIGH 8.7

DescriptionCVE.org

Wolf CMS through 0.8.3.1 contains an authorization bypass vulnerability in BackupRestoreController that allows authenticated non-administrative users to access restricted backup functionality due to a PHP operator precedence flaw in the permission check expression. Attackers can exploit the incorrect evaluation of the access control expression to create, download, and restore backups without administrative privileges.

AnalysisAI

Privilege escalation via authorization bypass in Wolf CMS (through 0.8.3.1) lets any authenticated non-administrative user reach the BackupRestoreController and create, download, and restore site backups that should be admin-only. The root cause is a PHP operator-precedence mistake in the permission-check expression, so the access control evaluates incorrectly and grants low-privileged accounts admin-tier backup functionality. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate as low-privileged user
Delivery
Request BackupRestoreController endpoint
Exploit
Bypass flawed permission check
Execution
Create and download full backup
Impact
Restore malicious backup / exfiltrate data
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated Wolf CMS account at any non-administrative privilege level (PR:L) that can reach the BackupRestoreController over the network (AV:N); no admin role, user interaction, or special attack requirement is needed against a default installation because the flawed operator-precedence check misgrants access regardless of the user's actual role. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N with VC:H/VI:H/VA:H) scores 8.7 (High) and is internally consistent with the description: network-reachable, low attack complexity, no user interaction, but requiring an existing low-privileged authenticated account (PR:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker registers or is granted an ordinary low-privileged Wolf CMS account, then sends a normal HTTP request directly to the BackupRestoreController backup endpoint. Because the mis-parenthesized permission check evaluates incorrectly, the request is authorized, letting the attacker create and download a full backup (exfiltrating site content and database) and restore arbitrary backup data to tamper with the site. …
Remediation No vendor-released patch version was identified in the provided data, so no fixed release can be cited with confidence; monitor the VulnCheck advisory (https://www.vulncheck.com/advisories/wolf-cms-authorization-bypass-via-backuprestorecontroller) and the Wolf CMS project for an update, and if a corrected build is published, upgrade to it. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, inventory all Wolf CMS instances and disable or restrict access to BackupRestoreController for non-administrative accounts using reverse proxy or web application firewall rules. …

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EUVD-2026-51293 vulnerability details – vuln.today
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